+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   52302 (1991 RL8) Classification: Main-belt Asteroid          SPK-ID: 2052302 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO257213 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1911355 n/a   a 2.2970621 n/a AU q 1.8580120 n/a AU i 7.37567 n/a deg node 21.47530 n/a deg peri 338.20354 n/a deg M 76.58892 n/a deg tp 2456129.9665520 (2012-Jul-21.46655200) n/a JED period 1271.6205069 3.48 n/a n/a d yr n 0.28310333 n/a deg/d Q 2.7361122 n/a AU   Orbit Determination Parameters    # obs. used (total)      586      first obs. used      1991-??-??      last obs. used      2013-03-15      # oppositions      11      planetary ephem.      DE403      condition code      1      fit RMS      0.56      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.559  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.8 mag n/a MPO257213   52302 (1991 RL8)          Discovered 1991-Sep-12 by Holt, H. E. at Palomar (675) Reference: 20030216/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 RL8 = 1998 SF5  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-19 10:43 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin